and what is the name of this machine....it is a machine where you place all these test tubes on it and when u turn it on it begins to spin around .. thus mixxing the material inside the tubes.
2007-03-02 09:18:13 · 8 answers · asked by Kelly P 1 in Science & Mathematics ➔ Chemistry
Centrifugation , spins at a certain rpm, and seperates the items by density. This is done by a centrifuge, which simply holds the test tubes and spins them rapidly and seperates everything in the tube.
A vortex, is a mixer that vibrates and spins the test tube while you hold it. The process would just be called "vortexing".
2007-03-02 09:21:46 · answer #1 · answered by Diana M 3 · 0⤊ 0⤋
Well,
I am a chemist. I use one of these almost everyday. It doesn't necessarly mix the samples, it actually uses gravity to separate chemicals. I use it to seperate water from dirty samples so that I can take the separted layers from the test tube. The instrument that you want the name of is called a "centrifuge". This machine will actually spin at VERY high speeds, some can go as high as 10000 RPM. Some as low as 2000RPM (revolutions per minute). Its like the spinning machine that they use on astronauts before they go into space and you always hear them talking about G-force. For me, it seperates the Organic stuff that I want from the waste stuff, like water that I don't want to analyze. But, there is something called vortexing, where you place the test tube on it while holding the test tube, and it spins the bottom while you hold the top of the test tube in a stationary position so that it makes the liquid in the test tube "vortex" so that it mixes it up. Hope this helps.
Wee-Man.
2007-03-02 11:40:46 · answer #2 · answered by boychuka 3 · 0⤊ 0⤋
Test Tube Spinner
2016-11-07 06:54:49 · answer #3 · answered by mcgoon 4 · 0⤊ 0⤋
The spinning machine that you describe is a centrfuge. But it does not mix, it is used to separate materials.In the hospital blood cells are separated from the serum.
A magnetic capsule is used to mix, on a plate tht looks like a hot plate but generates a changing magnetc field so that the capsule spins to mix.
2007-03-02 09:32:39 · answer #4 · answered by science teacher 7 · 0⤊ 0⤋
the actual process is called differential centrifugation. it does NOT mix material, rather separates (differentiates) the various material in the tube into layers based on density. the machine is called a centrifuge.
mixing material is done with a vortex.
you can also just centrifuge to bring everything in the matrix to the bottom in a pellet, so either differential centrifugation or just centrifugation.
2007-03-02 09:31:26 · answer #5 · answered by Sue O 2 · 1⤊ 1⤋
I think you're talking about a centrifuge. BUT it is not used to mix solutions. To the contrary, they are used to separate mixtures into their components based on each component's mass. For example, a centrifuge is sometimes used to separate the components of blood. When centrifuged, the heavier red blood cells sink to the bottom due to centrifugal force while the lighter plasma floats atop.
Hope that helps.
2007-03-02 09:37:29 · answer #6 · answered by derrick-fish 1 · 0⤊ 0⤋
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2016-04-02 04:19:59 · answer #7 · answered by Anonymous · 0⤊ 0⤋
I think its called a centrifuge.........
2007-03-02 09:28:37 · answer #8 · answered by ----- 2 · 0⤊ 1⤋